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The major forest products include ______.

   A. full tree、 long log、 short log, chip        B. full tree、 round log、 short log, chip

   C. whole tree、 long log、 short log, sawtimber

of ______.

   A. timber production, forest management

   B. next generation, growing cycle

   C. growing cycle, next generation

At a standard lumber mill, the first grading choice for hardwood is the ______.

   A. Factory Class         B. Veneer Class         C. Sawlog Class

Diameter at breast height is usually measured at ______ above "ground level".

   A. 1.5m     B. 1.4m     C. 1.3m